GB2189898B - Light valve - Google Patents

Light valve

Info

Publication number
GB2189898B
GB2189898B GB8621774A GB8621774A GB2189898B GB 2189898 B GB2189898 B GB 2189898B GB 8621774 A GB8621774 A GB 8621774A GB 8621774 A GB8621774 A GB 8621774A GB 2189898 B GB2189898 B GB 2189898B
Authority
GB
United Kingdom
Prior art keywords
light valve
valve
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8621774A
Other versions
GB2189898A (en
GB8621774D0 (en
Inventor
Richard George Humphreys
Edward Peter Raynes
Madeline Joan Bradshaw
Howard Ambrose Tarry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB8621774D0 publication Critical patent/GB8621774D0/en
Publication of GB2189898A publication Critical patent/GB2189898A/en
Application granted granted Critical
Publication of GB2189898B publication Critical patent/GB2189898B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
GB8621774A 1985-09-12 1986-09-10 Light valve Expired GB2189898B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858522636A GB8522636D0 (en) 1985-09-12 1985-09-12 Light valve

Publications (3)

Publication Number Publication Date
GB8621774D0 GB8621774D0 (en) 1986-10-15
GB2189898A GB2189898A (en) 1987-11-04
GB2189898B true GB2189898B (en) 1989-08-23

Family

ID=10585091

Family Applications (2)

Application Number Title Priority Date Filing Date
GB858522636A Pending GB8522636D0 (en) 1985-09-12 1985-09-12 Light valve
GB8621774A Expired GB2189898B (en) 1985-09-12 1986-09-10 Light valve

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858522636A Pending GB8522636D0 (en) 1985-09-12 1985-09-12 Light valve

Country Status (1)

Country Link
GB (2) GB8522636D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354833A (en) * 1999-09-28 2001-04-04 Sharp Lab Of Europ Ltd Liquid crystal device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396385A (en) * 1971-05-28 1975-06-04 Xerox Corp Light modulation method
GB1433130A (en) * 1972-11-09 1976-04-22 Secr Defence Substituted biphenyl and polyphenyl compounds and liquid crystal materials and devices containing them
GB1441571A (en) * 1972-11-09 1976-07-07 Secr Defence Liquid crystal devices incorporating biphenyl and polyphenyl compounds
US4232951A (en) * 1978-08-04 1980-11-11 Allied Chemical Corporation Mesomorphic isocyanate extended rigid polymers
US4293435A (en) * 1978-07-20 1981-10-06 Basf Aktiengesellschaft Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use
GB2146787A (en) * 1983-09-14 1985-04-24 Univ Manchester A liquid crystal information storage device
EP0171045A2 (en) * 1984-08-10 1986-02-12 BASF Aktiengesellschaft Optical recording medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1396385A (en) * 1971-05-28 1975-06-04 Xerox Corp Light modulation method
GB1433130A (en) * 1972-11-09 1976-04-22 Secr Defence Substituted biphenyl and polyphenyl compounds and liquid crystal materials and devices containing them
GB1441571A (en) * 1972-11-09 1976-07-07 Secr Defence Liquid crystal devices incorporating biphenyl and polyphenyl compounds
US4293435A (en) * 1978-07-20 1981-10-06 Basf Aktiengesellschaft Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use
US4232951A (en) * 1978-08-04 1980-11-11 Allied Chemical Corporation Mesomorphic isocyanate extended rigid polymers
GB2146787A (en) * 1983-09-14 1985-04-24 Univ Manchester A liquid crystal information storage device
EP0171045A2 (en) * 1984-08-10 1986-02-12 BASF Aktiengesellschaft Optical recording medium

Also Published As

Publication number Publication date
GB8522636D0 (en) 1985-10-16
GB2189898A (en) 1987-11-04
GB8621774D0 (en) 1986-10-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970910